Transport of atoms in a quantum conveyor belt

Details Transport of atoms in a quantum conveyor belt Transport of atoms in a quantum conveyor belt

2005-04-23

arxiv.org/abs/cond-mat/0504606v2

Published in Phys. Rev. A 72, 053605 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 9 figures

Scientific paper

10.1103/PhysRevA.72.053605

We have performed experiments using a 3D-Bose-Einstein condensate of sodium atoms in a 1D optical lattice to explore some unusual properties of band-structure. In particular, we investigate the loading of a condensate into a moving lattice and find non-intuitive behavior. We also revisit the behavior of atoms, prepared in a single quasimomentum state, in an accelerating lattice. We generalize this study to a cloud whose atoms have a large quasimomentum spread, and show that the cloud behaves differently from atoms in a single Bloch state. Finally, we compare our findings with recent experiments performed with fermions in an optical lattice.

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